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Wet Sponge Holiday Detector:

Wet Sponge Holiday Detector

SHD001 Wet Sponge Holiday Detector has received wide acceptance in the corrosion control and industrial painting industry as a device for locating bare spots (or holidays,cracks etc) in the thin protective films which are sprayed or brushed on metal or concrete surfaces. This pinhole detector is non-destructive with low voltage of 9V,67.5V,90V DC output.
The inspection electrode consists of a 168×68×28mm cellulose sponge which, when dampened with water, is moved over the coated surface. When the electrode passes a void or bare spot, a small current flows and actuates an audible signal in the instrument. The damp sponge provides an electrically conductive film that contacts the surface being inspected and insures good inspection even in corners and around irregular shapes where holidays are most likely to occur.

  • Non-destructive, sponge-type holiday detector.
  • Regulated 9V,67.5V,90V DC output.
  • With LED light indicator for each voltage
  • Li-pol batteries readily available anywhere.

(1)thickness:9V ——for 300 UM;
                   67.5V—for 500 UM;
                   90V——for 500 UM;
(3)Voltage accuracy:+5%;
(4)Power supply: rechargeable 11.1V/1100mA Li-pol battery
(8)Sponge size:168×68×28mm
(9)Probe length:196mm
(10)Earth cable:4m


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